Pc running slow when no internet.

Hello.

As more information is needed for your issue to be solved, you better do the following:

-- STEP 1 --

Run a System Scan with the Bitdefender program and see if your device might be infected.

Also, you could perform a scan with these FREE malware removal tools:

Kaspersky Virus Removal Tool 2020

https://www.kaspersky.com/downloads/free-virus-removal-tool

ESET Online Scanner

https://download.eset.com/com/eset/tools/online_scanner/latest/esetonlinescanner.exe

F-Secure Online Scanner

https://download.sp.f-secure.com/tools/F-SecureOnlineScanner.exe

Malwarebytes AdwCleaner

https://adwcleaner.malwarebytes.com/adwcleaner?channel=release

If no threats are detected, move to the next steps.

-- STEP 2 --

Repair Bitdefender, by following these steps:

https://www.bitdefender.com/consumer/support/answer/13429/

-- STEP 3 --

If the instructions from Step 2 didn't help, uninstall the Bitdefender program using the Uninstall Tool.

For Bitdefender Paid version click here:

https://www.bitdefender.com/links/uninstall_consumer_paid.html

For Bitdefender Trial version click here:

https://www.bitdefender.com/links/uninstall_consumer_trial.html

It will completely remove the program.

Next, reinstall Bitdefender from your Bitdefender Central account and see if the issue has been resolved, as reinstalling the program usually solves the issues.

-- STEP 4 --

If the instructions from Step 3 didn't help, follow the instructions in this step.

First, take screenshot(s) of the issue,

create a log file on your Windows device using Bitdefender Support Tool, by following these steps:

https://www.bitdefender.com/consumer/support/answer/1733/,

create a connectivity log file, by following these steps:

https://www.bitdefender.com/consumer/support/answer/9689/

and

create a log file on your Windows device using BDsysLog, by following these steps:

https://www.bitdefender.com/consumer/support/answer/1922/

Next, contact Bitdefender Consumer Support by e-mail:

https://www.bitdefender.com/consumer/support/

with short description of the issue.

After that, you will get an automated reply by the Bitdefender Customer Care Team, with your ticket number.

Now, in reply to that automated reply, you can send the screenshot(s) you already took and the log files you already created.

Since you are all done, just wait for the support engineers to investigate your issue and find a solution to fix the issue.

Remember that the screenshot(s) and the log files will help a lot to the support engineers for better and faster investigation on your issue and finding a solution.

Regards.